原子吸收光谱法检测汽油中锰含量的影响因素

Influencing Factors for Determination of Manganese Content in Gasoline by Atomic Absorption Spectrometry

文章对原子吸收光谱法测定车用汽油中的锰含量的影响因素如助燃气流量、燃气流量、燃烧头高度、光照时间进行了详细分析,得出了在助燃气流量为5.0 L·min^(-1)、乙炔燃气流量为1.0 L·min^(-1)、燃烧头高度为10.0 mm的条件下,避光储存的样品吸光度达到最大且较为稳定,测试结果准确可靠,相对标准偏差RSD%(n=6)小于2%。

The factors affecting the determination of manganese content in vehicle gasoline by atomic absorption spectrometry,such as auxiliary gas flow,gas flow,combustion head height and illumination time,are analyzed in detail.It is concluded that under the conditions of the flow of auxiliary gas is 5.0 L·min^(-1),the flow of acetylene is 1.0 L·min^(-1) and the height of combustion head is 10 mm.The absorbance of the samples stored in the dark reaches the maximum and is relatively stable.The test results are accurate and reliable,and the relative standard deviation RSD%(n=6)is less than 2%.